Property, Plant and Equipment (Tables)

6 Months Ended

Jun. 30, 2018

Property, Plant and Equipment [Abstract]

Property, plant and equipment

Property, plant and equipment consist of the following:

In thousands	June 30, 2018			December 31, 2017
Land	$	9,127		$	9,408
Facilities and equipment	559,454			554,160
Assets under capital leases	99,228			82,753
	667,809			646,321
Accumulated amortization (1)	(464,812		)	(448,001		)
	202,997			198,320
Construction in progress	70,340			56,417
Property, plant and equipment, net	$	273,337		$	254,737

(1) Includes $39.7 million and $28.2 million of accumulated amortization related to assets under capital leases at June 30, 2018 and December 31, 2017, respectively.